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  1. GMC Acadia catalytic converter problems!

    DIY, Aftermarket/Upgrades
    Starting at 90,000 miles. The final catalytic converter plug up solid and shut the car down. It was cleaned out and went a month and did it again another upper Catapano exhaust had failed and came down and plug the main again missed quite a bit often on. I bought a set of aftermarket cats had...
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